Rotary valve.



(I. H. BANTLEY.

ROTARY VALVE. APPLIUAT-ION FILED NOV.9,1911.

Patented Apr. 21, 1914.

M M u 2 SHEETSSHEET 1..

I l/f lldvl I l ,GQQQQQ5 WITNESSES Arm/mus U. H. BANTLEY.

ROTARY VALVE APPLICATION FILED NOV. 9, 1911.

- register with each other,

-. n i w a it it)! l and ii its/i ROTARY VALVE.

rotates.

To all whom "it may concern:

Be it known that I, CHARLES H. BANTLEY, a citizen of the United States, and a resident of Lebanoinin the county of Laclede and State of Missouri, have invented a new and Improved Rotary Valve, of which the following" is a full, clear, and exact description. The object of the invention is to provide a new and improved rotary valve, more especially designed for internal combustion engines having one, two or more cylinders, and arranged to insure a proper admission .Of the explosive mixture to the cylinder or cylinders and a proper scouring and exhaust of the products of combustion from the cylinders, and to render the engine comparatively noiseless when running.

F orthe purpose mentioned, use is made of a rotary admission valve and a rotary 6X haust valve, each valve consisting of two revoluble valve cylinders, one within the other and rotating in opposite directions, the valve cylinders having ports adapted to and .at the same time with a corresponding cylinder admission or exhaust port.

A practical embodiment of the invention is represented in the accompanying drawlngs forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a cross section of an internal combustion engine provided with rotary admission and exhaust valves, the section being on the line 11 of Fig. 3; F in. 2 is a sectional side elevation of part of the gearing for rotating the admission and exhaust valves the section being on line 22 of Fig. 1; Fig. 3 is a sectional plan view of the in ternal combustion engine, the section being on the line 33 of Fig. 1; Fig. 4 is an end elevation of the inner valve cylinder of the admission valve; and Fig. 5 is a like View of the outer valve cylinder of the admission valve.

As shown in the drawings, the rotary valve is applied to an internal combustion engine both as an admission valve and an exhaust valve, the enginehaving four cylinders, but it is evident that the rotary admission and exhaust val-ves'may be used on internal combustion engines having but one cylinder or a desired plurality of'cylinders.

-' As shown inFig. 1, the engine Iisinonnt ed on an engine casing;A,'supporting the B each containing a Specification of Leiters Patent.

Application filed November 9, 1911.

posite direct-ions relative to the outer Fatented Apr. Serial No. 659,291.

piston C connected in the usual manner with the engine shaft D journalcd in s itable hearings in the casing, A. Uzi sides of the cylinders B, B, B all-f. arranged cylindrical admission and c valve chests E and E", which may form in tegral parts of the cylinder or separate parts, bolted or otherwise fastened to the cylinders B, B, B and B In the a jlniission valve chest E is fitted to rotate an outer valve cylinder F Within which is fitted an inner Valve cylinder F, the said'cylinders F and F forming the admission valve, and being mounted to rotate in opposite directions as hereinafter more fully explained. Similar outer and inner valve cylinders G and G constitute the exhaust valve, and the outervalve cylinder G is mounted to rotate in the exhaust valve chest E while the inner valve cylinder G is mounted to'turn in the outer .valve cylinder G, and one rotates in an opposite direction relative to the other. Each of the cylinders B, B, B and B provided at its upper or working end and at opposite sides thereof with an admission port a leading into the admission valve chest E, and an exhaust port l) leading to the exhaust valve chest 15, and the ports a of the several cylinders B, B, B and'li are adapted to register with ports 0 formed in the outer valve cylinder F, and the said ports a are adapted to register with ports (Z formed in the inner valve cylinder F. The exhaust ports Z) of the several cylinde B, B and B are adapted to register wit. ports 0 formed in the outer valve cylinder G, and the ports e are adapted. to register with ports f formed in the inner valve inder G. It will be noticed that the ports 0 are staggered in a longitudinal direction. one relative to the other, and the ports d are similarly arranged; the ports a are likewise staggered in a longitudinal. di-- rectioii and similar to the ports f.

A supply pipe H is connected with one end of the inner valve cylinder F to conduct the explosive mixture into the said. inner valve cylinder F, and an exhaust pipe connects with one end of the inner valve cyl inder G of the exhaust valve.

The inner valve cylinders F and G are rotated in 'cylindcrsil'and G, and for thispurpose following. arrangement is made: Thee-rid oi the inner valve cylinder F opposite the one connected with the supply pipe ii iii-.QFO-

vidcd with a shaft F through hollow shaft- F formed on the corresponding end of the outer valve cylinder F, and the inner valve cylinder G is provided with a shaft Gr extending through a hollow shaft G on the corresponding end of the outer valve cylinder G. On the shafts F and G are secured gear wheels J and J, and similar gear wheels J, J are secured on the hollow shafts F and G and the said gear wheels J and J mesh with opposite sides of a gear wheel K mounted to rotate loosely on a stud L attached to the first cylinder B, and the gear wheels J and J are in mesh with opposite sides of a gear wheel li likewise mounted to rotate loosely on the stud L.

0-11 the gear wheels K and K are secured or formed bevel gear wheels N, N in mesh with a bevel gear wheel N secured on the u pper end of a shaft 0 provided at its lower end with a bevel. gear wheel P in mesh with bevel gear wheel P secured on the engine shaft D. Now when the engine is running and the engine shaft D is turned then a rotary motion is transmitted by the gear wheels I. and P to the shaft 0, which by the bevel gear wheel N rotates both bevel gear wheels N and N and consequently the ear wheels K and K, which by the gear i vheels J and J and J J rotate theouter and inner valve cylinders F and F 1n opposite directions one relative to the-other and likewise the outer and inner valve cylinders G and G, and the said outer and inner valve cylinders If, F and G, G are so arranged relatively one to the other that their ports 0, d and e, f come in mesh with each other at the time they register with the corresponding admission or exhaust ports a or Z) of the corresponding cylinder B, B, B or B 1 It will be noted particularly from Fig. 3, that the closed ends of the valve cylinders F, ii" and G, G and the contiguous ends of the valve chests E and E are provided with relatively engaging circular ribs. and recesses whereby to form fluid-tight joints, and it is to he further noted that the pipes H and I abut the open ends of the several valve cyl-,

inders in order to hold the ribs and recesses in proper position irrespective of any other parts.

The operation in the different cylinders is alike, so it sutiices to describe the operation. of but one. When the piston C is at the down or suction stroke then the ports 0 and (l of the outer and inner valve cylinders F and F are in register with the ports aso that the. explosive mixture passing from the supply pipe H into the inner valve cylinder F passes through the said registering ports I, (Z, a into the upper end or" the cylinder, B, and the said ports 0, (i move out of register with each other and also out of register with which extends l the port a previous to the time piston C reaches 'the lower end of its downward orsuction stroke. During the next upward or i compression stroke the ports 0, d areout'tff register with the port a, and when the piston C nears the upper end'of its compression stroke an ignition takes place so that-the piston G is now sent on its down or power stroke, and when the piston C next returns, the ports a andimove in register with each other and also in"'register with the port I) so that the piston C during its return stroke forces the products of combustion out of the cylinder B through the said ports I), c, 1 into the inner valve cylinder G from which the product's-of combustion can escape by way of theexhaustpipe I. It is understood that duringthecompression and power strokes both pairs ofcylinder ports a, d and e, f are out of register with the orts a, and b, and the ports 0 and f are a so'out of register with the port I) during the suction stroke of the piston C, and the ports a and d are out of register with the port a during the exhaust stroke of the piston C.

I It is understood that the several cylinders ture in proper succession,"-.and the products of combustion are exhausted as above explained, and the admission valve serves to supply the explosive mixture to all the cylinders of the engine, and likewise the. exhaust valve takes proper care of the product-s of. combustion from all the different ,cylinders. j

It is understood that by providing the valve cylinders F, F and the valve cylinders G, G with the ports as dcscribed, and rotating the inner and outer valve cylinders in opposite directions to each other, it is evidentthat the ports will open to their full capacity at shorter travel of the engine piston, and 'close much quicker that if a single rotary valve traveling in only one direction was used. By thus opening and closing the ports to their fullest capacity a uniform charge of the explosive mixture is allowed as well as a more throrough scavenging and cleaning of the engine cylinders on the exhaust stroke of the engine. It will also be noticed that by rotating the valve cylinders very little noise is produced while the engine is running.

It is understood that the valve cylinders 1 F and G, G are positively driven from, the engine shaft D and consequently the ports of the said valve cylinders always move into proper register with each other and with the corresponding ports a and b to accurately control the admission and exhaust of the explosive mixture; to the several I cylinders in the proper rotation and likewise control the escape of the products of combus-v tion from the said cylinders.

In order to prevent leakage the outer valve B, B, B and B receive. the explosive mixhis no i

cylinders F andG are preterably provided with suitable packing rings intermediate the staggered ports. as indicated in Fig. 3. The cylinders B. B, B and B as well as the chests E and E are preferably provided with suitable water jackets as indicated in the drawings.

It is understood that the rotary admission and exhaust valves are so geared that they travel one comp ete revolution to every two retolutious of the engine shaft 1) and durin each complete revolution of the valve cylinders l. b" and G, G then respective ports 0, (I and v, f inove 111 register with each other and with the cylinder admission and exhaust ports (I and 6/ Having thus described my invention, I claim as new and desire to secure by Letters Patent: i

A multiple cylinder internal'combustion engine provided with an admission val e and an exhaust valve, each valve comprising a pair of elongated revoluble cylinders one within the other and closed at one end, each cylinder having a longitudinal series of staggered ports of which each. port of one cylinder is in the same transverse plane with a port of the other cylinder, the said cylinders having relatively engaging circular ribs and recesses at their closed ends andhav-' ing shafts extending from said'ends, means connected with said shafts for rotating the cylinders continuously in relatively opposite directions, a casing having a closed end and within which said cylinders are mounted said casing and the outer cylinders having their closed ends provided with relatively engaging circular ribs and recesses, and pipes connected. to the opposite casing end and againstwhich the ends of the cylinders abut, whereby to maintain the latter .in position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHAR-LES BANTLEY. \Vitnesses: \V. H. CALLAGHAN- XVMPJ. JOLLEY. 

